Publisher's Synopsis
Secret Codes lets readers in on the sneaky world of mysterious messages. A free invisble ink pen and developer show how to mastermind a whole network of secret agents.
Hardback (15 Jan 1999)
Not available for sale
Out of stock
Secret Codes lets readers in on the sneaky world of mysterious messages. A free invisble ink pen and developer show how to mastermind a whole network of secret agents.
ISBN: | 9780590199933 |
Publisher: | Hippo |
Imprint: | Hippo |
Pub date: | 15 Jan 1999 |
DEWEY: | 652.8 |
DEWEY edition: | 21 |
Number of pages: | 60 |
Weight: | 1000g |
Height: | 200mm |
Spine width: | 3mm |